ELECTROCHEMICAL AND SURFACE ANALYSIS STUDIES ON CORROSION INHIBITION OF MILD STEEL

Syed Abuthahir, jamal Abdul Nasser, susai Rajendran

Abstract


1-(8-hydroxy quinolin-2yl-methyl) thiourea (HTF) has been used as a corrosion inhibitor in controlling corrosion of mild steel immersed in aqueous solution containing 60 ppm of Cl-. Weight loss method reveals that 250 ppm of HTF + 25 ppm of Zn2+ provide 95% of inhibition efficiency. Polarization study indicates that the system controls anodic reaction predominantly. AC impedance spectra reveal that a protective film is formed on the metal surface. The protective film has been analyzed using Fourier Transform Infrared and fluorescence spectra.


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DOI: http://dx.doi.org/10.17628/ecb.2013.2.932-935

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